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The U.S. immigration system has not escaped the challenges presented by the COVID-19 pandemic. Concerns have been raised about policy changes, enforcement actions, immigrant detention, and deportation practices during the outbreak. In response, dozens of lawsuits have been brought against the government on behalf of undocumented immigrants and detainees, ranging from the conditions of ICE detention facilities to the public charge rule. While most cases continue to move through the federal court system, a number of district court judges have already ruled in favor of the plaintiffs. This paper focuses on three particular areas of immigration policy and practice during COVID: ICE enforcement actions, immigrant detention, and deportations. We summarize the current state of extant data and evidence on each of these and examine questions that remain for further research.

The Vera C. Rubin Legacy Survey of Space and Time holds the potential to revolutionize time domain astrophysics, reaching completely unexplored areas of the Universe and mapping variability time scales from minutes to a decade. To prepare to maximize the potential of the Rubin LSST data for the exploration of the transient and variable Universe, one of the four pillars of Rubin LSST science, the Transient and Variable Stars Science Collaboration, one of the eight Rubin LSST Science Collaborations, has identified research areas of interest and requirements, and paths to enable them. While our roadmap is ever-evolving, this document represents a snapshot of our plans and preparatory work in the final years and months leading up to the survey's first light.